Trust me. The latest on the royal caribbean cruise nightmare. People are off the ship and there are plans to get it right back out to sea just days after almost 700 passengers fell violently ill. They're speaking out now and ABC's gio Benitez is in bay yon, New Jersey, where the ship is docked. Good morning, gio. Reporter: Good morning to you, robin of a dramatic cleanup is under way right now. What was supposed to be a ten-day vacation turned into a little piece of hell. This morning royal caribbean crew members are scrubbing this ship down preparing for the next sail tomorrow, just hours after passengers described a horrific outbreak at sea. You never felt pain until you did this. One of the guys was coughing so bad and getting sick so bad he fell out of a chair and split his head open. Reporter: Watch as one is taken off the "Explorer of the seas" on a stretcher an taken away by ambulance. Some passengers say that on the ship they had to wait as long as six hours to get into the clinic. I had three days of sickness and quarantine and, of course, you had to stay in your room. They provided everything that you needed, but so that you didn't infect others. Reporter: Before the ship can go out again, workers will have to clean the entire ship from top to bottom, 15 passenger decks, 14 elevators, more than 1500 state rooms, 3 swimming pools, an ice skating rink, even a mini golf course, the likely culprit, that dreaded norovirus. It makes a perfectly healthy individual miserably sick, almost instantly. Noroviruss are very tough, they're hard to eradicate. The virus can remain viable on surfaces for quite a long time. Reporter: And that's why today's cleanup is so crucial. The methods that have been so effective in controlling this virus once we understood it was happening will just be continued to be used as well as a few others to get the -- to ensure that the ship is fully sanitiz sanitized. Reporter: And this morning, reports that hundreds of other sick passengers just went back to their state rooms and never reported their illness. And remember, this ship, royal caribbean, says, will head out to sea tomorrow, George. Wow, okay, gio, thanks very much.

This transcript has been automatically generated and may not be 100% accurate.

Now Playing: Two Torn Up Doctor's Notes Found in Germanwings Co-Pilot's Home

Now Playing: {{itm.title}}

{"id":22295399,"title":"Sick at Sea Cruise Passengers Speak Out","duration":"3:00","description":"With Explorer of the Seas in port and preparing for the next sail, passengers describe the horrific outbreak at sea.","url":"/GMA/video/sick-sea-cruise-passengers-speak-22295399","section":"GMA","mediaType":"Default"}